Firstly, ensure that you buy quality dark cotton heat transfer paper from us.
Use standard inkjet printer ink to print onto the dark cotton heat transfer paper. NB! Do not print with sublimation ink onto the dark cotton heat transfer paper as the image will not come out vibrant and the image will smudge and fade over time.
Adjust the pressure of your press to strong and cut out the dark cotton image around the print to your desired outline. Use heat resistant transfer paper to lift the print from the backing paper or just remove the backing paper by hand.